Tie-plate.



.vire srarns WILLIAM L. DE REMER, OF

sarna-rr einen.

CHICAGO, ILLINOIS.

i -TIEeFLA'TE.

Specification of Letters Patent. Application filed August 25, 1906. Serial No. 332,053

.To all whom, t nfl/(Ly concern.'

Beit known that I, WILLIAM L. DE KEMER, l a citizen of the United States, residing in (lhistrength, having ribs adapted to support the rail and strengthen the plate longitiuiinallyT without requiring the use of longitudinal bot` tom flanges extending beneath the main load bearing bottom surface portion of the plate and which cut into the fibers ofthe tie.

A further object is to provide a tie-plate having ribs on its upper side which engage the rail to be supported and having ribs on its under side adapted to provide a load supporting bottom surface of greater area than t e upper rail engaging surfaceportion of the plate, and to provide connecting portions of maximum strength and minimum weight between such main load supporting ribbed portions of the plate, whereby a plate of maximum strength and formed of the `minimum amount of metal consistent with the required 'strength and having a load supporting bottom surface of large area is afforded.

Cther and further ebJects of the invention will appear from an examination of the drawings and the following description and claims.

The invention consists of the features, combinations and details of construction hereinafter descrioed and claimed. l

' In the accompanying drawings Figure 1 is a plan view of a tie-plate constructed in accordance with my improvements, Fig. 2. A side elevation of the same, showing a track rail mounted thereon, and Fig. 3. A transverse sectional elevation tekenen.line 3" Fig.. 1, looking in the direction of the arrow.

In constructing a tie-plate in accordance With my improvements lf provide a main body portion a formed preferably of rolled metal of sufficient length to extend beneath effectual secured to railway I Patented May 14, 1907.

beyond the opposite sides of the track rail to be supported thereby. The plate is provided with perforations b and c, arranged at suitable intervals on opposite sides of the rail engaging portion and in position to receive lthe spikes forholding the rail and plate in position upon the tie. taining shoulder (l extends transversely across the 'upper side of the plate in position telenand transversely A rail r -1 gage the outer edge of the bottom flange of a track railso as to' resist the side thrusts upon the rail and retain it in position. The outer spike holes b extend through this shoulder and are reinforced thereby. The upper face of the plate is provided witha series of iiat topped ribs e and a series of convex or round topped ribsf which extend obliquely and at an acute angle with relation tothe longitudinal center or lengthof the plate. and round. topped ribs are arranged in alternate relation and may extend from the rail retaining shoulder or transverse rib inward longitudinally of the plate entirely across its lrail engaging upper face portion. The portions of the plate formed by the round topped grooves the ribs or arched portions e have g extending centrally thereof along underside of the 'la-te. These grooves are preferably of sufficient depth so that the* arched portions are thinner than the portions of the plate between such, arched portions.

In order to obtain the strongest construction or maximum rigidity cou led with minimum weight and quantity ofJ the top of the arches' or round topped rib portions should be flush with the top faces or relatively flatrib portions. Bottom ribs h on the under side of the plate extend directly' beneath and arallel with the upper ribs e, and each of t ese bottom rib ortlous forms a load bearing flat bottom sur ace portion of greater area than the. upper face of the rib beneath which su eh bottom rib extends. By this arrangement it will be seen that a plate containing the'minimum amount ofmetal and having the maximum 'rigidity and strength is provided, and that the bottom These fiat material,

lroo

ribs provide alarge load bearing surface of i much greater area than that ofthe rail engaging surface portions of the upper ribs be:l neath which such bases of the arches formed-by the intermediate'round topped ribs or arched portions of the plate rest upon the." flat faced rib por tions.;

bottom ribs extend. The` andirm connections there-between. Being l 4. Atie-plate having on its upper side a arch shaped these round topped rib portions Amay bemade of the lightest possible construction consistent with thel strength re- 'quired Vfor resisting the stresses and strains to which such plates are subjected in use.

Lvdepressions or recesses.

dt is very desirable toavoid the use of sharp angles in thedepressed ortions of a plate formedtfof rolled metal, ti'ius' minimizing the wearing awayl of the `corespondingly projecting portions of the' rolls which Jform such It is also desirable to enable the minimum amount of metal to 4be. employed in the formation of the upper rib portions which engage the rail to be supported.` The side faces i of the relatively liet topped upper ribs e are therefore made concave .so that theyA convergev with the rounded 'faces of the round to'ppediribs in such a' manner that sharpedges are not rey, uired upon the rolls for forming such side aces or the recesses between the alternate round and fiat topped upper ribs. The bot- @tom grooves are also preferably rounded,

` extend ebliquely and, extending as they do obliquely at an acute angle with relation-:to the longitudinal ,center of the plate, the broad bottomed lower' rib portions afford substantially all of the advantages of a llat bottom plate so far as a large surface' area is concerned. v

p The relatively broad bottoinfaces of the ,lower ribs prevent injury to the fibers olf the tie and. -form a support for both the iiat topped ribs and the arches or round topped rib portions therebetween and Vthe load supported therby.

By so constructing the plate that the ribs 4 and atan acute angle with relation to the .longitudinal center of the plate-#such longitudinal center extending transversely of the rail-to. be supported there b -r-and by so disposingz the arches that they a ternate with the main load bearing ribs and extend obliquelywith relation* to the longitudinal center of the late, great longi- 'tudinal rigidity and su 'cient l'transverse rigidity is affordedand the minimum amount of metal is re uired while at the saine time the necessity or the use of depending longitudinal strengthenin ilanges which would cut into the fibers of t e tie is dispensed with. I .claimm Ll. A tieplate.'having on its upper side a transverse shoulder and ribs extending obe liquelywith the relation to such shoulder.

-2. Atie-plate having en its upper side a transverse shoulder and a series ot ribs extending ohliquely-and at an 'acute angle with lrelation to .the longitudinal` center of the plate.

3. .A tie-plate having on its upper side a vseries if substantially tlat. topped ribs extending at an aoute angle with relation to its longitudinal center.

provided on its upper side with 6. A tie-plate termed of rolled inetal having alternate liat and round toppedribs extending obliquely with relation to the longitudinal center ole the plate.

7. A tie-plate having a inain body portion provided with a series of ribs on its .under Side and having ribs on its upper side urranged directly over such bottom ribs and connected by intermediate arched portions zof the plate. i A

S. A tie-pla'te having a inain body portion a series of rail supporting ribs, and having on its under v sidea series of ribs each having a bottoni surface of greater area than the t/tilislii'lare ot' the upper rib beneath which such lower rib extends.

9. A tie-plate having` on its upper side a series of ribs extending oblio'uel)rv with rolation to its longitudinal renter` :uid having on its under-side a serios ol' bottom ribs itu-h directly beneath one ol` such upper ribs and having a surface ol' greater area than tht` upper rib beneath which such lower rib ex tends.

l0, A tie-plate having` u inain bod v portion provided with :t series ol' ribs on its under side. and having oirits upper side alternate. relatively,T thitand rounded ribs, the relatively lhxt upper ribs being directly over tht` bottom ribs and connected-by the rounded rib portions ot'fthe plate.

l l A tie-i'ilatohaving n. niain bod \Y portion provided with ribs lorining substantially tlat ltop and bottom surl'aee portions, and having relativel)lv thin arched portions integral with and forni-ing connection between such rib portions oi the plate.l v

l2. A. tie-plate having on its upper-sith` a transversely extending shoulder and ribs extending at an avute angle with relation to lOO IlO

the .longitudinal renter ol' the plate and' transversely with relation to tho ruil to be supported thereby, and .iaving on its under side a series ol' depending ribs each forn'iing a load bearing bottoni surface portion ot greater area than the top surface ot the ribs directly 'over such bottoni ribs.

lf3. A. tie-plate having a main body portion prov coneaveside faces and with ribs having `round l upper surface portions intermediate such oncave sided ribs.

.'14. A'tie-platehaving a main body portieri. rovided with ribs in oblique relation to its ongitudinal center' and having round topped ided on its upper side ,with ribs having' i ljoblijlue'rrib portions.

' WILLIAM L. DE REMER. Witnesses: 'l

JOHN W. CUSHMAN', NELLIE E, GEORGE.A 

